AU7788800A - Method of measuring the twist imparted to an optical fibre and procedure for processing an optical fibre using this method - Google Patents
Method of measuring the twist imparted to an optical fibre and procedure for processing an optical fibre using this methodInfo
- Publication number
- AU7788800A AU7788800A AU77888/00A AU7788800A AU7788800A AU 7788800 A AU7788800 A AU 7788800A AU 77888/00 A AU77888/00 A AU 77888/00A AU 7788800 A AU7788800 A AU 7788800A AU 7788800 A AU7788800 A AU 7788800A
- Authority
- AU
- Australia
- Prior art keywords
- optical fibre
- twist
- signal
- measuring
- imparted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/105—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type having optical polarisation effects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/0253—Controlling or regulating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
- C03B37/02745—Fibres having rotational spin around the central longitudinal axis, e.g. alternating +/- spin to reduce polarisation mode dispersion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/168—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by means of polarisation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/10—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring diameters
- G01B21/12—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring diameters of objects while moving
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
- G01B5/10—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters of objects while moving
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/12—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring diameters
- G01B7/125—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring diameters of objects while moving
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
- G01M11/37—Testing of optical devices, constituted by fibre optics or optical waveguides in which light is projected perpendicularly to the axis of the fibre or waveguide for monitoring a section thereof
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/10—Internal structure or shape details
- C03B2203/18—Axial perturbations, e.g. in refractive index or composition
- C03B2203/20—Axial perturbations, e.g. in refractive index or composition helical
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/36—Dispersion modified fibres, e.g. wavelength or polarisation shifted, flattened or compensating fibres (DSF, DFF, DCF)
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2205/00—Fibre drawing or extruding details
- C03B2205/06—Rotating the fibre fibre about its longitudinal axis
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2205/00—Fibre drawing or extruding details
- C03B2205/40—Monitoring or regulating the draw tension or draw rate
Abstract
A method of measuring the twist imparted to an optical fibre includes the steps of advancing the optical fibre in a predetermined direction and at a predetermined velocity, imparting to the optical fibre, during the step of advancing, a twist about its axis, measuring the diameter of the optical fibre during the step of advancing, to generate a time-based signal indicating the diameter, and processing this signal to find a value indicating the imparted twist. The step of processing includes the principal steps of transforming in the frequency domain the signal relating to the measurement of the diameter, calculating the power spectrum of the signal thus obtained, distinguishing in this power spectrum the signal peaks correlated with the imparted twist, determining the maximum frequency associated with these signal peaks, and dividing the value of this maximum frequency by the value of the velocity of advance of the fibre to find the value indicating the imparted twist.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99121543 | 1999-10-29 | ||
EP99121543 | 1999-10-29 | ||
US16357099P | 1999-11-05 | 1999-11-05 | |
US60163570 | 1999-11-05 | ||
PCT/EP2000/010248 WO2001033184A1 (en) | 1999-10-29 | 2000-10-18 | Method of measuring the twist imparted to an optical fibre and procedure for processing an optical fibre using this method |
Publications (1)
Publication Number | Publication Date |
---|---|
AU7788800A true AU7788800A (en) | 2001-05-14 |
Family
ID=26153158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU77888/00A Abandoned AU7788800A (en) | 1999-10-29 | 2000-10-18 | Method of measuring the twist imparted to an optical fibre and procedure for processing an optical fibre using this method |
Country Status (8)
Country | Link |
---|---|
US (1) | US6837074B2 (en) |
EP (1) | EP1226415B1 (en) |
JP (1) | JP2003513267A (en) |
AT (1) | ATE287528T1 (en) |
AU (1) | AU7788800A (en) |
DE (1) | DE60017579T2 (en) |
ES (1) | ES2235956T3 (en) |
WO (1) | WO2001033184A1 (en) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1356333A2 (en) * | 2000-12-28 | 2003-10-29 | PIRELLI S.p.A. | Method for producing an optical fibre telecommunications cable with reduced polarization mode dispersion |
US6910277B2 (en) * | 2001-08-29 | 2005-06-28 | Proulx Manufacturing, Inc. | Noise attenuating flexible cutting line for use in rotary vegetation trimmers and method of manufacture |
US6791678B2 (en) | 2002-07-23 | 2004-09-14 | Fitel Usa Corp. | System and method for obtaining spin and mechanical twist data during optical fiber draw |
US20040062515A1 (en) * | 2002-09-26 | 2004-04-01 | Garner Harry Douglas | Apparatuses and methods for imparting mechanical twist in optical fibers |
US7035525B2 (en) * | 2002-09-26 | 2006-04-25 | Fitel Usa Corp. | Methods and apparatuses for correcting mechanical twist in optical fiber |
ATE517851T1 (en) | 2002-12-30 | 2011-08-15 | Prysmian Spa | METHOD FOR PRODUCING AN OPTICAL FIBER WITH LOW POLARIZATION MODE DISPERSION |
FR2849438B1 (en) * | 2002-12-31 | 2005-03-18 | Cit Alcatel | METHOD FOR CONTROLLING THE MODAL POLARIZATION DISPERSION OF AN OPTICAL FIBER DURING FIBRAGE |
US6876804B2 (en) * | 2003-03-20 | 2005-04-05 | Corning Incorporated | Method of making a spun optical fiber with low polarization mode dispersion |
FR2856805B1 (en) * | 2003-06-24 | 2005-10-28 | Cit Alcatel | SYSTEM COATING THE MODAL POLARIZATION DISPERSION OF AN OPTICAL FIBER |
KR20050005335A (en) * | 2003-07-01 | 2005-01-13 | 엘지전선 주식회사 | Method and apparatus for measuring a pitch of stranded cable |
BRPI0419220B1 (en) * | 2004-12-02 | 2018-03-06 | Prysmian Cavi E Sistemi Energia S.R.L. | METHODS FOR CONFERING A PREDICTED ROTATION TO AN OPTICAL FIBER AND TO PRODUCE AN OPTICAL FIBER |
US7317855B2 (en) * | 2004-12-16 | 2008-01-08 | Corning Incorporated | Method of imparting twist to optical fiber |
US20070201793A1 (en) * | 2006-02-17 | 2007-08-30 | Charles Askins | Multi-core optical fiber and method of making and using same |
PL2033029T3 (en) * | 2006-06-22 | 2019-05-31 | Prysmian Spa | Optical fiber having sinusoidal spin function |
US8467073B2 (en) * | 2010-03-10 | 2013-06-18 | Beta Lasermike | Lay length and ratio measuring device for electrical cable |
US9877796B2 (en) | 2013-09-30 | 2018-01-30 | Koninklijke Philips N.V. | System and method for minimizing fiber twist in optical shape sensing enabled devices |
JP6500364B2 (en) * | 2014-08-13 | 2019-04-17 | 住友電気工業株式会社 | Optical fiber manufacturing method and manufacturing apparatus |
EP3158284B1 (en) | 2014-06-17 | 2022-03-16 | Heraeus Quartz North America LLC | Apparatus and method for heating and measuring of transparent cylindrical articles |
CN104165810B (en) * | 2014-08-04 | 2016-05-18 | 常熟市环境试验设备有限公司 | Optical cable twist and warping experimental rig |
IT201600128201A1 (en) * | 2016-12-19 | 2018-06-19 | Lemur S R L | APPARATUS AND METHOD TO COAT A FILIFY SOUL AND ARTICLE FILIFORM SO IT HAS OBTAINED |
JP2022014725A (en) * | 2020-07-07 | 2022-01-20 | 住友電気工業株式会社 | Method for manufacturing optical fiber |
WO2023095916A1 (en) * | 2021-11-29 | 2023-06-01 | 住友電気工業株式会社 | Method for measuring twist of optical fiber and method for manufacturing optical fiber |
CN115385568B (en) * | 2022-09-09 | 2023-09-12 | 中国建筑材料科学研究总院有限公司 | Twisting method and twisting device for optical fiber, large-caliber optical fiber image inverter and preparation method |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4280827A (en) * | 1979-09-04 | 1981-07-28 | Corning Glass Works | System for measuring optical waveguide fiber diameter |
JPS61256936A (en) * | 1985-05-01 | 1986-11-14 | Showa Electric Wire & Cable Co Ltd | Production of optical fiber |
IT1185951B (en) * | 1985-09-27 | 1987-11-18 | Pirelli Cavi Spa | PROCEDURE AND LINE FOR THE PRODUCTION OF CABLES |
DE3641816A1 (en) * | 1986-12-06 | 1988-06-16 | Robert Prof Dr Ing Massen | METHOD AND ARRANGEMENT FOR MEASURING AND / OR MONITORING PROPERTIES OF YARNS AND ROPES |
EP0542724B1 (en) * | 1987-02-16 | 1996-06-12 | Sumitomo Electric Industries Limited | Furnace for heating glass preform for optical fiber and method for producing glass preform |
JPS63311110A (en) * | 1987-06-13 | 1988-12-19 | Sumitomo Electric Ind Ltd | Method and apparatus for detecting abnormality of twisted wire |
DE3732513C2 (en) * | 1987-09-26 | 1996-07-18 | Schlafhorst & Co W | Method and device for measuring and testing staple fiber yarn |
JPH02196045A (en) * | 1989-01-23 | 1990-08-02 | Sumitomo Electric Ind Ltd | Heating furnace for producing base material of high-purity quartz |
JPH03170807A (en) * | 1989-11-30 | 1991-07-24 | Furukawa Electric Co Ltd:The | Measurement of twisted pitch of electric wire and cable |
US5298047A (en) * | 1992-08-03 | 1994-03-29 | At&T Bell Laboratories | Method of making a fiber having low polarization mode dispersion due to a permanent spin |
US5366527A (en) * | 1993-04-05 | 1994-11-22 | Corning Incorporated | Method and apparatus for coating optical waveguide fibers |
US5440659A (en) * | 1993-09-30 | 1995-08-08 | At&T Corp. | Method for fabricating a fiber optic cable having improved polarization mode dispersion (PMD) performance |
US5443610A (en) * | 1994-01-29 | 1995-08-22 | Corning Incorporated | Apparatus for controlling fiber diameter during drawing |
JPH07324289A (en) * | 1994-05-30 | 1995-12-12 | Tokyo Seiko Co Ltd | Method for continuously measuring diameter of twisted strand and device therefor |
JP3353805B2 (en) * | 1996-03-14 | 2002-12-03 | 住友電気工業株式会社 | Optical fiber drawing equipment |
JP3603368B2 (en) * | 1995-03-06 | 2004-12-22 | 住友電気工業株式会社 | Glass fiber twist detection method |
FR2732762B1 (en) * | 1995-04-05 | 1997-05-09 | Alcatel Fibres Optiques | METHOD FOR DETECTING THE VARIATION IN THE DIAMETER OF AN OPTICAL FIBER AND METHOD FOR MANUFACTURING OPTICAL FIBER |
CN1113823C (en) * | 1996-01-22 | 2003-07-09 | 康宁股份有限公司 | Optical-fiber of modulated spin for reducing polarisation mode dispersion and process and apparatus for its manufacture |
US6324872B1 (en) | 1996-04-12 | 2001-12-04 | Corning Incorporated | Method and apparatus for introducing controlled spin in optical fibers |
EP0842909B1 (en) | 1996-11-13 | 2002-03-13 | Fibre Ottiche Sud F.O.S. S.p.A. | Apparatus and method for forming an optical fiber |
JP4180194B2 (en) * | 1999-06-30 | 2008-11-12 | 三菱レイヨン株式会社 | Plastic optical fiber, and plastic optical fiber manufacturing apparatus and manufacturing method |
US6791678B2 (en) * | 2002-07-23 | 2004-09-14 | Fitel Usa Corp. | System and method for obtaining spin and mechanical twist data during optical fiber draw |
-
2000
- 2000-10-18 ES ES00967887T patent/ES2235956T3/en not_active Expired - Lifetime
- 2000-10-18 AU AU77888/00A patent/AU7788800A/en not_active Abandoned
- 2000-10-18 JP JP2001535020A patent/JP2003513267A/en not_active Withdrawn
- 2000-10-18 EP EP00967887A patent/EP1226415B1/en not_active Expired - Lifetime
- 2000-10-18 AT AT00967887T patent/ATE287528T1/en not_active IP Right Cessation
- 2000-10-18 WO PCT/EP2000/010248 patent/WO2001033184A1/en active Search and Examination
- 2000-10-18 DE DE60017579T patent/DE60017579T2/en not_active Expired - Lifetime
-
2002
- 2002-04-29 US US10/133,359 patent/US6837074B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2235956T3 (en) | 2005-07-16 |
US20020178758A1 (en) | 2002-12-05 |
ATE287528T1 (en) | 2005-02-15 |
DE60017579T2 (en) | 2006-03-23 |
US6837074B2 (en) | 2005-01-04 |
EP1226415B1 (en) | 2005-01-19 |
DE60017579D1 (en) | 2005-02-24 |
EP1226415A1 (en) | 2002-07-31 |
JP2003513267A (en) | 2003-04-08 |
WO2001033184A1 (en) | 2001-05-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK6 | Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase | ||
TH | Corrigenda |
Free format text: IN VOL 15, NO 34, PAGE(S) 7254-7258 UNDER THE HEADING APPLICATIONS LAPSED, REFUSED OR WITHDRAWN PLEASE DELETE ALL REFERENCE TO APPLICATION NO. 77888/00 |
|
MK6 | Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase |